Bhagavad Gita 4.35

यज्ज्ञात्वा न पुनर्मोहमेवं यास्यसि पाण्डव।येन भूतान्यशेषेण द्रक्ष्यस्यात्मन्यथो मयि ॥४.३५॥

yajjñātvā na punarmohamevaṃ yāsyasi pāṇḍavayena bhūtānyaśeṣeṇa drakṣyasyātmanyatho mayi

Knowing that thou shalt not, O Arjuna, again be deluded like this; and by that thou shalt see all beings in thyself and also in me.

गीता